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Anssi Hannulabb3caf72006-07-19 01:44:17 -04001/*
2 * Force feedback support for Zeroplus based devices
3 *
4 * Copyright (c) 2005, 2006 Anssi Hannula <anssi.hannula@gmail.com>
5 */
6
7/*
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 */
22
23
Jiri Slaby987fbc12008-09-18 12:23:32 +020024#include <linux/hid.h>
Anssi Hannulabb3caf72006-07-19 01:44:17 -040025#include <linux/input.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090026#include <linux/slab.h>
Anssi Hannulabb3caf72006-07-19 01:44:17 -040027#include <linux/usb.h>
Jiri Slaby987fbc12008-09-18 12:23:32 +020028
29#include "hid-ids.h"
30
Jiri Kosina0f6f4312009-05-15 15:46:44 +020031#ifdef CONFIG_ZEROPLUS_FF
Jiri Slaby987fbc12008-09-18 12:23:32 +020032#include "usbhid/usbhid.h"
Anssi Hannulabb3caf72006-07-19 01:44:17 -040033
34struct zpff_device {
35 struct hid_report *report;
36};
37
Jiri Slaby987fbc12008-09-18 12:23:32 +020038static int zpff_play(struct input_dev *dev, void *data,
Anssi Hannulabb3caf72006-07-19 01:44:17 -040039 struct ff_effect *effect)
40{
Dmitry Torokhove0712982007-05-09 10:17:31 +020041 struct hid_device *hid = input_get_drvdata(dev);
Anssi Hannulabb3caf72006-07-19 01:44:17 -040042 struct zpff_device *zpff = data;
43 int left, right;
44
45 /*
46 * The following is specified the other way around in the Zeroplus
47 * datasheet but the order below is correct for the XFX Executioner;
48 * however it is possible that the XFX Executioner is an exception
49 */
50
51 left = effect->u.rumble.strong_magnitude;
52 right = effect->u.rumble.weak_magnitude;
Jiri Kosina58037eb2007-05-30 15:07:13 +020053 dbg_hid("called with 0x%04x 0x%04x\n", left, right);
Anssi Hannulabb3caf72006-07-19 01:44:17 -040054
55 left = left * 0x7f / 0xffff;
56 right = right * 0x7f / 0xffff;
57
58 zpff->report->field[2]->value[0] = left;
59 zpff->report->field[3]->value[0] = right;
Jiri Kosina58037eb2007-05-30 15:07:13 +020060 dbg_hid("running with 0x%02x 0x%02x\n", left, right);
Jiri Kosina4916b3a2006-12-08 18:41:03 +010061 usbhid_submit_report(hid, zpff->report, USB_DIR_OUT);
Anssi Hannulabb3caf72006-07-19 01:44:17 -040062
63 return 0;
64}
65
Jiri Slaby987fbc12008-09-18 12:23:32 +020066static int zpff_init(struct hid_device *hid)
Anssi Hannulabb3caf72006-07-19 01:44:17 -040067{
68 struct zpff_device *zpff;
69 struct hid_report *report;
70 struct hid_input *hidinput = list_entry(hid->inputs.next,
71 struct hid_input, list);
72 struct list_head *report_list =
73 &hid->report_enum[HID_OUTPUT_REPORT].report_list;
74 struct input_dev *dev = hidinput->input;
75 int error;
76
77 if (list_empty(report_list)) {
Jiri Slaby79575012008-09-18 12:23:34 +020078 dev_err(&hid->dev, "no output report found\n");
Anssi Hannulabb3caf72006-07-19 01:44:17 -040079 return -ENODEV;
80 }
81
82 report = list_entry(report_list->next, struct hid_report, list);
83
84 if (report->maxfield < 4) {
Jiri Slaby79575012008-09-18 12:23:34 +020085 dev_err(&hid->dev, "not enough fields in report\n");
Anssi Hannulabb3caf72006-07-19 01:44:17 -040086 return -ENODEV;
87 }
88
89 zpff = kzalloc(sizeof(struct zpff_device), GFP_KERNEL);
90 if (!zpff)
91 return -ENOMEM;
92
93 set_bit(FF_RUMBLE, dev->ffbit);
94
Jiri Slaby987fbc12008-09-18 12:23:32 +020095 error = input_ff_create_memless(dev, zpff, zpff_play);
Anssi Hannulabb3caf72006-07-19 01:44:17 -040096 if (error) {
97 kfree(zpff);
98 return error;
99 }
100
101 zpff->report = report;
102 zpff->report->field[0]->value[0] = 0x00;
103 zpff->report->field[1]->value[0] = 0x02;
104 zpff->report->field[2]->value[0] = 0x00;
105 zpff->report->field[3]->value[0] = 0x00;
Jiri Kosina4916b3a2006-12-08 18:41:03 +0100106 usbhid_submit_report(hid, zpff->report, USB_DIR_OUT);
Anssi Hannulabb3caf72006-07-19 01:44:17 -0400107
Jiri Slaby79575012008-09-18 12:23:34 +0200108 dev_info(&hid->dev, "force feedback for Zeroplus based devices by "
Anssi Hannulabb3caf72006-07-19 01:44:17 -0400109 "Anssi Hannula <anssi.hannula@gmail.com>\n");
110
111 return 0;
112}
Jiri Kosina0f6f4312009-05-15 15:46:44 +0200113#else
114static inline int zpff_init(struct hid_device *hid)
115{
116 return 0;
117}
118#endif
Jiri Slaby987fbc12008-09-18 12:23:32 +0200119
120static int zp_probe(struct hid_device *hdev, const struct hid_device_id *id)
121{
122 int ret;
123
124 ret = hid_parse(hdev);
125 if (ret) {
126 dev_err(&hdev->dev, "parse failed\n");
127 goto err;
128 }
129
130 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF);
131 if (ret) {
132 dev_err(&hdev->dev, "hw start failed\n");
133 goto err;
134 }
135
136 zpff_init(hdev);
137
138 return 0;
139err:
140 return ret;
141}
142
143static const struct hid_device_id zp_devices[] = {
144 { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) },
145 { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) },
146 { }
147};
148MODULE_DEVICE_TABLE(hid, zp_devices);
149
150static struct hid_driver zp_driver = {
151 .name = "zeroplus",
152 .id_table = zp_devices,
153 .probe = zp_probe,
154};
155
Peter Huewea24f4232009-07-02 19:08:38 +0200156static int __init zp_init(void)
Jiri Slaby987fbc12008-09-18 12:23:32 +0200157{
158 return hid_register_driver(&zp_driver);
159}
160
Peter Huewea24f4232009-07-02 19:08:38 +0200161static void __exit zp_exit(void)
Jiri Slaby987fbc12008-09-18 12:23:32 +0200162{
163 hid_unregister_driver(&zp_driver);
164}
165
166module_init(zp_init);
167module_exit(zp_exit);
168MODULE_LICENSE("GPL");